Is there a proverb for "when one starts shaping up after losing many times". For example, I have failed in Maths Test many times, but now I am taking it serious and working hard to pass next time. The essence is that, we react after having much loss, rather than taking actions before.
Moreover, that proverb can be like the situation when a frog keeps regulating their body temperature in the boiling water, but in the end gets cooked.
There's a proverb in Urdu:
ﺁ ﺑﮯ ﺳﻮﻧﭩﮯ ﺗﯿﺮﯼ ﺑﺎﺭﯼ‘ ﮐﺎﻥ ﭼﮭﻮﮌ ﮐﻨﭙﭩﯽ ﻣﺎﺭﯼ
Translation: to shape up after having much loss, or continuous failure.
In addition, I thought that the following words would define it but not pretty sure about it as it looks like a quote:
"never leave for tomorrow that which you can do today."
I hope there's a English proverb for which I am asking here.